Stamp for decorating nonplanar surfaces



y 30, 1944- H. c. HEBENSTREIT 2,350,033

STAMP FOR DECORATING NONPLANAR SURFACES Filed Nov. 29, 1941 5Sheets-Sheet l INVENTOR,

ATTORNEY.

y 1944- H. c. HEBENSTREIT STAMP FOR DECORATING NONPLANAR SURFACES FiledNov. 29, 1941 3 Sheets-Sheet 2 WW I KXTTORNEY.

M y 1944 H. c. HEBENSTREIT STAMP FOR DECORATING NONPLANAR SURFACES 3Sheets-Sheet 3 Filed Nov. 29, 1941 5:5 :1 v INVENTOR, jr/y/ 6'1%19ensfiez'z? Patented May 30, 1944:-

UNITED STATES: F C

STAMP FOR DECORATINGNONPLANAR I 7' SURFACES Harry Hebenstreit, Alliance;Ohio T Application November 29, 1941, Serial.No.-420,9-16

8 Claims; (CL 101-879) I This invention" relates to improvements-1mstamps for anda method of decorating non-- planar surfaces and hasparticular reference to stamp and method suitable for decorating various types of dish-ware. 1

The principal object of the present invention is the provision of amethodof decorating' the inner non-planar surfaces of relative deepdishware'by first contacting the outer portion of the dish surface to bedecorated with a resilient-stamp and then forcing-this stamp inwardlyagainst the surface whereby it is compressed and distorted so as to meetthe inclined surface of the dish at substantially rightangles'. Anotherobject of this invention is the provision of a. method of decoratingnon-planar su'rfaces of dish-ware wherein the outer portionof thesurface of the dish to be decorated isfirst contacted by a resilientstamp and then the inner portion of said surfaceis decorated by rollingthe inner portion' of the stamp thereagainst undertensioh."

Still anotherobject of the invention is the provision of a; stamp fordecorating non-planar surfaces having aprinting face disposed at agreater angleto the direction of travel of'jthe stamp than the angle ofthe non-planar surface to be decorated is to said direction of travel.

A further object of the'invention'is the bro vision of stamp fordecoratingnon-planar sur-' faces 'comprising a base member of relativelyrigid structure and acushionmember secured therein and provided withmaterial of greater thickness at the portions where greater depressionsof the cushion-member'are" to bemade.

Astill further object is theprovisionof a'stamp constructed withgraduated thickness of cushio'ning sections whereby the outer surfacesof deep dishes may be first printed-then the printing face of the stampmaybe rolled into position to properly contact the moreinclined surfacesof the dish. l i Another object of this invention is the -pro- 1 visionof a resilient stamp so constructed that it will successivelycontact-the portions'""of the non-planar' dishsurface to be decoratedwith *a f substantially equal pressure against allportions' of the dishsurface at the completion of the impression stroke of the stamp; r 11.21Other. objects are durability and simplicityof construction, ease andaccuracy of :operation- I and adaptability for use in decorating thevarious typesof non-planar surfaces; i .1 3w .with theseobjects ias wellas otherss' which will appear? during the course of: the speciflca- 58"tion, -in view, reference will now be had to the drawings wherein: I i it "Figure 1 is a vertical section of a printing press (of the Gordontype) suitable for carrying out the method of decorating non-planarsurfaces,

and embodying the novel stamp of this inven- Fig'. 2 is a fragmentaryplan view ofa portion of the press.

Fig.3 isa' planview of the stamp withparts broken away-to disclose thevariousfeatures.

Fig. 4 ma cross sectional view takenon line IV-IV'of Fig.'3. i i

"Fig. 5 is an enlarged sectional viewof a portion of the stamp with thedish positioned in the partially contacting position.

Fig. 6 is a view similar to that shown in Fig. 5 with the'stampcompletely contacting the nonplanar surface of the dish to be decorated.

Fig. 7-is afragmentary'plan view of a modified form of the stamp.

Fig. 8 is acrosssectional view taken on line VIII-VIII of 'Fig.- 7 witha dish segment in operati-ve relation" relative thereto.

Fig. 9 is a view similar to that shown in Fig. 8 with the outerperipheral portion of the stamp contacting a portion'of the non-planarsurface ofthe dish to be decorated. r

Fig.- 10 shows the stamp and dish in complete contacting relation! Fig.11 is a fr'agrnentary view'of a stamp member wherein theresilient stampmember is shown hollow. 4

Throughout the several -views like reference "characters refer-tosimilar partsand the numeral ;.2335'340 'dated- November 30, 1943.

This press includes a stationary frame 22 to which is pivotally' mounteda bed frame 24 by means of pins 26. The bed frame 24 carries a bed-plateWhich is adapted to be oscillated to- -ward and from the platen orimpression control table- 30 which is adjustably carried by thestationary frame Z'L- The bed plate 28 carries a printingforin 32whichis securely mounted thereon. Thisprinting form includes a chase 'yumounted on the press bed 28 and having a central opening 36 formedthrough bed plate 28.

stamp 40 best shown in Figs. 3 and 4, is providedwith t'blOCk 42, havinga central opening u or it may bemade plane in some instances. The backside 46 of the block 42 is made planar and can be adjustably mountedagainst the planar face of bed plate 28. The front or top portion ofblock 42 is grooved at 48 to form an annular recess or groove in theface of the block for the reception of a resilient cushion member 56.

Since this particular stamp is constructed to be used in decoratingnon-planar surfaces of relative deep, circular dish-ware the groove 43is circular in Iform, however it; might be m'ade elliptical or'of moreor' less irregular form 'to' properly conform to'dishes of variousshapes. It.

will be noted that this groove is stepped and that the outer portion 52is of greatendepth than 1' 5 the inner portion 54.

A substantially U-shaped cushion member is adapted to be fitted intogroove d'8 withits outer portion extending above the? top surface ofblock 52 to present a non-planar surface 58 to receive the thin sheet ofresilient material 60 formed to presenta printing design 52. Surface 58is substantially frusto-conicalin shape and is.

made of a less degree of inclination than the degree of inclination ofthe surface 64 of thedish 66 to be decorated. I'his cushion member 5fican be built-up by using several .pieces of sheet sponge-rubber, orsome similar material, or may be formed from a single piece of rubber topresent the proper shape. The sheet rubber member 60, having thedesignt2 formed on its outer surface presents a relief printing face and ismade of a close grain rubber suitable for presenting a smoothprintingsurw face and retains its original normal, shape. for a long period oftime. I V I A suitable adhesive, is used to secure the cushion member 56to the bloc kA Z to prevent its displacement and to permit of propercompression during the printing operation. In the structure shown inFig. 4 the cushion memberis secured at surfaces 10, I2, and 'M. Tofacilitate proper compression of the cushion to obtain the best printingeifect the outer wall of the inner leg llfi of the cushion mber isV-eroovedatia. Th

outer leg 8110f thecushion member is secured,

on y a ed e 0, thus mit n t. o, ec irk.

prised to any desired degree.

The rolling movement of the stamp member is shown in. Figs... .4, 5 and6. In Fig. 4 the stamp is in the normal position, Fig. 5 discloses thestamp. moved to a partially contacting position and Fig. 6 shows thecompleted stamping move- 'ment..' .Asthe stampis retracted the reverserolling action is obtained. This rolling action to and This stamp issuited for use infdecorating deep I dish-ware wherein the non-planarsurface to be decorated is at a considerable angle to the; direction ofr v o h stam rel t ve t the dish during the decorating ,operation,Thefragment of dish 66 shown in Figs. 5 and 6, is a soup dish in whichthe surface 64 to be decorated is disposed at a relative steQP an letothe direction. of travel of the stamn'indicatedby arrow. 82.-

In the decoratingoperation the outer periph eral portion of theinkedstamp design first contacts the outer rim portionof the; dish surface.to;

be decorated. The cushion portion beneath this outer decorating portionof th stamp is gradually compressed as the stamp moves toward ,the I-dish thereby settingup sufficient pressure between the dish and stamp topreventcreepingof; the

stamp on the dish surface. Due. to. the special properties of thecushion mernbenthe design. sheet and the angled relation of the dishsurface I to the normal position of the stamp printing sur-.. face therewill be a rolling efiect of;the stam printing surface as the decoratingoperation;

progresses. It will be observedthat the inner pe riphery of the designsheet 68 ;mo ves outwardly as the decorating operation -progresse s thueaus ing an increase in design sheet.

eale diam t at. the

from the decorating position produces a movement; of the design surface,at ubstantially right angles to theparticular surface to be decorated, I

thereby insuring a clean-cut impression on the dish surface without anydragging or slipping of the stamp on the dish surface. The distributionof the cushion resilient resistance can be varied to. suit-the, Surfaceof the dish surface to be decorated.

When' decorating the outer surface 82 of a dish,

it is guite evident that the same general method 'might be usedby simplymaking the printing surface of the stamp concave instead of convex asshown. I I The modified form of stamp shown in Figs. '7,

8,. 9 ,and 10 contemplates the rigid block grooved ateltgreceivethecushion member 94 made up of sections 96, 98 and I09. Section 96 and 98may be of air foam rubber, and section I00 of a. more dense spongerubber, the outer sheet of, rubber I82 is close. grained and suitablefor re ceivingthe design I04. I 'his stamp is suitable for.

decorating the small diameter deep dish I06, and may be used, withslight changes. to decorate almost any of the various types of dishes. 7

Figs. 8, 9 and 1 0 showgenerally the actions of.

i tamndur he' o a i o ti Fig. ll shows a further modified form of astambjwhereidthe block I ll] is LEIOOVSCL at H2 to receive the {hollowcushion member I 14, provided with an outersurface printing sheet 6.

The, recess 1 lfi formed in the cushion may be varied in cross sectionalshape andarea to meet.

All rin .si1I -ac. .lt r t o a p are 1 positipned: b e il ei tersur ace.of e s pport.-

i esb ock so ,t tthc lorinema erial to be used in decorating thedishware may be spread theree i e u ualm n -I. Y Y

These types; of, stamps are .spitable for: decorat-.

ing -thenon-planarsurfaces of the various types. dish nclud n sha o and,deep, dishes. of. differentdiameter as dishes having abrupt verges,

and dishes ofyarious shapesw I Since many :rninor ehan esmay be. made Ithe I stamp without, departing from the spirit of; the inventionit isdesired. to be, limited only by the.- scope of the appended. claims.Ic1aim:; .-.1--

1. A stamp for deco-rating non-planar surfaces. comprising a. basememberhaving a. ring shaped recess -.formed. therein, .a resilient ring padposi tionedwith its;outer. edge portion ,in. said recess and its inneredge portionresting on saidubase;

, adjacent said.recess-andJeXtendingL above. said ,bELSE? member, and;a; relief design; of" substantially frusto-conical form carried on theouter surface of said pad.

2. A stamp for decorating non-planar surfaces comprising a base memberhaving a continuous groove formed in the top side thereof, a ring shapedresilient cushion member mounted in said groove and extendingthereabove, an upwardly and inwardly inclined printing design carried onthe outer surface of said pad.

3. A stamp for decorating non-planar surfaces comprising a base memberhaving an annular groove formed in the top portion thereof and having aninclined inner wall, a resilient cushion member mounted in said grooveand extended above the top surface of the base member to present asubstantially frusto-conical surface, and a sheet of relatively firmresilient material having a relief design, secured to said frustoconicalsurface.

4. A stamp for decorating non-planar surfaces comprising a base memberhaving a transversely stepped annular groove formed in the top portionthereof, a cushion member formed to fit into said stepped annular groovewith a portion of the cushion member extending thereabove to rest on thebase member adjacent said groove and to present a non-planar surfaceabove said base member, and a thin sheet of resilient material formed topresent a relief design mounted on the outer surface of said pad.

5. A stamp for decorating non-planar surfaces comprising a base memberhaving a transversely stepped annular groove formed in the top portionthereof, a hollow rubber cushion member formed to fit into said steppedannular groove with a portion of the cushion memberextending thereaboveto present a non-planar surface, and a relatively thin sheet ofresilient material formed to present a relief design mounted on theouter surface of said pad.

6. A stamp for decorating non-planar surfaces comprising a base memberhaving a transversely stepped annular groove formed in its top portion,a rubber ring member adapted to be fitted into said stepped groove withits outer portion extending thereabove to present a substantiallyfrusto-conical surface, and a sheet of resilient material formed topresent a relief printing design mounted on the outer surface of saidpad.

'7. A stamp for decorating non-planar surfaces comprising a base memberhaving an annular roove formed in the outer face thereof an annularcushion member of substantially U-shaped cross-sectional area positionedwith its legs in said annular groove and its leg connecting portionextending therebeyond to present a substantially frusto-conical surface,and a printing design carried by said frusto-conical surface.

8. A stamp for decorating non-planar surfaces comprising a base memberhaving an annular groove formed in its outer surface, said groove beingdeeper at its outer periphery than at its in- Her periphery, a cushionmember positioned into said groove and extending outwardly therefrom topresent a substantially frusto-conical surface, the outer peripheralsurface of said cushion member being free to move vertically in saidgroove and a printing design carried by said cushion member.

HARRY C. I-IEBENSTREIT.

